MESON Chess Problem Database

Problem Display
PID: 109846 (3R1K2/3N2p1/1P2kpP1/3rpp2/1NP1bB2/5p2/5P2/Q3R3 w - - 0 1)

Barry, Henry William

Checkmate, 1902

3R1K2/3N2p1/1P2kpP1/3rpp2/1NP1bB2/5p2/5P2/Q3R3

#2

11 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Sc5#
    • 1...Rd2
      • 2.Sc5#
    • 1...Rd3
      • 2.Sc5#
    • 1...Rd4
      • 2.Sc5#
    • 1...Rc5
      • 2.Sxc5#
    • 1...Rd6
      • 2.Sc5#
  • Tries
    • 1.cxd5+?
      • 1...Bxd5
        • 2.Sc5#
      • 1...Kd6!
  • Keys
    • 1.Qd4!
      • 1...Kd6
        • 2.Sc5#
      • 1...Rxd4
        • 2.Sc5#
      • 1...Rxd7
        • 2.Qxd7#
      • 1...exd4
        • 2.cxd5#
      • 1...exf4
        • 2.Qxd5#
      • 1...Ra5
        • 2.Re8#
      • 1...Rb5
        • 2.Re8#
      • 1...Rc5
        • 2.Sxc5#
        • 2.Re8#
      • 1...Rd6
        • 2.Sc5#
      • 1...Bb1
        • 2.Qxd5#
      • 1...Bc2
        • 2.Qxd5#
      • 1...Bd3
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 4
  • Sets
    • R(c);N_GUARD::S(I)
    • R(c);N_GUARD::S(I),XR(c)
  • Tries
    • Try
      • P(E);CHECK,XR(c)
      • Vars
        • B(b);P_SPINP(d),XP(E)::S(I)
      • Refutation
        • K(f);P-FLIGHT,P_SPINP(d)
  • Actual
    • Q(A);
    • Vars
      • K(f);P-FLIGHT,P_SPINP(d),P_SPINR(c)::R(J)+S(I)
      • R(c);N_GUARD,XQ(A)::S(I)
      • R(c);OGATE,XS(I)::QAB1(A),XR(c)
      • P(d);P_SPINB(b),XQ(A)::P(E),XR(c)
      • P(d);P_SPINB(b),XB(F)::QAB1(A),XR(c)
      • R(c);::R(J)
      • R(c);N_GUARD::S(I)
      • B(b);N_GUARD,P_SPINP(d)::QAB1(A),XR(c)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).